An axial disc type five-degree-of-freedom suspension bearingless switched reluctance motor

Abstract

The invention discloses an axial disk type five-degree-of-freedom suspension bearingless switched reluctance motor, which includes two bearingless motors, a rotating shaft, and an axial thrust disk. The first bearingless motor includes a first stator and a rotor, and a second The second bearingless motor includes a second stator and a rotor. The number of poles of the rotor teeth of the two motors is 4, which is sleeved on the same shaft with the axial thrust disc, and the axial thrust disc is located between the first rotor and the second rotor; the number of poles of the stator teeth of the two motors is 12, There is a winding on each tooth pole of the first stator and the second stator; when the winding on the first stator and the winding on the second stator are conducted, the axial thrust plate uses the axial magnetic flux leakage of the stator teeth to generate The magnetic pulling force realizes the axial levitation control, and the radial main magnetic flux provides the radial levitation force and torque, finally realizing the high-speed and stable operation of the five-degree-of-freedom levitation of the motor. The motor of the invention has simple structure, low production cost, can realize decoupling of axial and radial suspension forces, and has high reliability.

Description

Technical field[0001]The present invention relates to a axial disc-type five-degree-free suspended unfold-to-open switch resistor, which belongs to the technical field of magnetic suspension switch magnetic resistance motor.Background technique[0002]High speed as one of the important trends of motor development, solving how key technologies for high-speed motors are critical. When the motor reaches a sufficiently high speed, the higher the performance of the bearing performance, and the traditional mechanical bearings cannot meet the needs of the high-speed motor, and the new high-speed bearing price is too expensive, the cost of the increased motor production, hinders motor high speed Development of industrialization. There are many kinds of high-speed motors, and the switching magnetic blocking electric machines are greatly saved due to their own rotors and winding coils, and there is a simple structure, but also improve the reliability in motor operation, where no bearings Switch...

AI Technical Summary

Problems solved by technology

[0003] Bearingless switched reluctance motors can not only achieve rotational motion, but also allow the rotor to achieve suspension. For high-speed applications such as turbomachinery and compressors, it is necessary to achieve five-degree-of-freedom suspension while ensuring rotation performance. The traditional five-freedom The high-degree magnetic levitation switched reluctance motor is bulky, the power devices are complex, and the fault tolerance performance is poor. How to realize the five-degree-of-freedom suspension of the bearingless switched reluctance motor is a current research difficulty

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